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Coding gain on screen_content is 12.2% (was 6.6%).

Some features such as frame-level color buffer, adaptive
entropy coding, are coming in future patches.

Change-Id: I2658cf5ec0cbb02cff685475759f3b68c9807697

Incorporates wedge compound prediction modes.

Change-Id: Ie73b54b629105b9dcc5f3763be87f35b09ad2ec7

No performance change.

Change-Id: If35125fed909d89235b303514f77a33183bb36b3

Includes various cosmetic changes and refactoring including
naming the sharp filters differently (since they are no longer
8-tap).

Change-Id: Ida5a19ca0daa9f6a64a6734394c685b2a4a2564a

The interintra experiment, which combines an inter prediction and an
inter prediction have been ported from the nextgen branch. The
experiment is merged into ext_inter, so there is no separate configure
option to enable it.

Change-Id: I0cc20cefd29e9b77ab7bbbb709abc11512320325

This commit converts the scalar motion vector probability model
into vector format for later precise estimate.

Change-Id: I7008d047ecc1b9577aa8442b4db2df312be869dc

Change-Id: I51307a217eeba14dbdaa2522be474530316a4faa

In this experiment, an obmc inter prediction mode is enabled for
>= 8X8 inter blocks. When the obmc flag is on, the regular block-
based motion compensation will be refined by using predictors of
the above and left blocks.
Fixed some compatibility issues with vp9_highbitdepth, supertx,
ref_mv, and ext_interp.

Coding gain (%) on derflr/hevcmr/hevchd
OBMC:
1.047/1.022/0.708
OBMC + SUPERTX:
1.652/1.616/1.137
SUPERTX:
0.862/0.779/0.630

Change-Id: I5d8d3c4729c6d3ccb03ec7034563107893103b7f

Remove the implicit assumption on offsetting the index by 1.

Change-Id: I6f1d391e067d57b7e45b9287e866014dbc16da71

Setting FIXED_TX_TYPE as 1 makes the encoder skip tx_type search,
about twice as fast.

This speed feature is off by defualt; we can turn it on when we
want to quickly test new ideas.

Change-Id: Ieab5807d17fcd54fce3e8ae2f59a18b42eb79408

Change-Id: Ia9ccba156a8a3ada6928be53eb6258fb68b6c9f1

Change-Id: Ia5a68f26c67d13d3f2dd3b3f8afabb781e2c8f73

This commit enables entropy coding for dynamic reference motion
vector modes. The probability model is contexted on the ranking
categories of the reference motion vector candidates.

Change-Id: I09b58d98a409d63ec1a407331e29f8945b7ef17d

This commit enables the dynamic reference motion vector coding mode
for the compound inter blocks.

Change-Id: Ibe78fd8de6989db392cd67a9d81a69d680345ba1

BD-rate performance improvement (on top of ext-intra):
derflr  0.22%
hevclr  0.36%
hevcmr  0.48%
hevchr  0.37%
stdhd   0.19%

Average speed impact on some derf clips is about 40% slower (on
top of ext-intra). Speed improvment is a to-do.

Change-Id: I8fe3fe8c5e4f60d0462778adbcc15c84dfbe7a25

This commit generalizes dynamic reference motion vector coding mode
to support multiple candidate modes in the rate-distortion
optimization scheme and to support the selection in the bit-stream
syntax. The maximum number of modes allowed is currently limited to
4. The syntax elements for the dynamic reference motion vector
modes are using binary codes. The scheme supports single reference
frame.

It improves the compression performance
derf   0.135%
hevcmr 0.098%

Change-Id: Id053d6ce76e8365e52727bd0d12d28ce3de2e0e8

This commit allows an adaptive motion vector referencing mode
approach. It checks the available reference motion vector candidate
list and decides the amount of motion vector referencing modes. The
current implementation assumes simple binary coding for the syntax.

The compression performance is improved by
derf   0.11%
hevcmr 0.38%
stdhd  0.09%
hevchr 0.23%

The coding gains due to the new reference motion vector system are
derf   1.0%
hevcmr 1.7%
stdhd  1.4%
hevchr 1.3%

Change-Id: Idf932fc373546fe59c8741f1b933ff656e8dbc3f

dead code since:
5d3327e8 Remove palette from VP10

Change-Id: I4a36575706ea6fffefe5bc778595112ef6ff37d8

The loop filter relies on inter_tx_size in MB_MODE_INFO being set
properly when VAR_TX is enabled. Supertx coded blocks did not set this
previously at all, and the differing garbage values eventually resulted
in in a YUV mismatch between encoder and decoder after loop filtering.

This patch fixes this by setting inter_tx_size to the proper supertx
size in both the encoder and the decoder. This should also mean that
loop filtering is done at the proper transform boundaries, even when
supertx or vartx is being used.

Change-Id: I41a564cd6d34ce4a8313ad4efa89d905f5ead731

Fixes some of the issues introduced by a merge from master.

derflr: -0.893% BDRATE
hevcmr: -1.667% BDRATE

Change-Id: I4c5b40ec63a6f19521191d3c730af87db3c4bc00

Combinations of different mv modes for two reference frames
are allowed in compound inter modes. 9 options are enabled,
including NEAREST_NEARESTMV, NEAREST_NEARMV, NEAR_NEARESTMV,
NEAREST_NEWMV, NEW_NEARESTMV, NEAR_NEWMV, NEW_NEARMV, ZERO_ZEROMV,
and NEW_NEWMV.
This experiment is mostly deported from the nextgen branch.
It is made compatible with other experiments

Coding gain of EXT_INTER(derflr/hevcmr/hevchd): 0.533%/0.728%/0.639%

Change-Id: Id47e97284e6481b186870afbad33204b7a33dbb0

NEW2MV is enabled, representing a new motion vector predicted from
NEARMV. It is mostly ported from nextgen, where it was named
NEW_INTER.
A few fixes are done for sub8x8 RDO to correct some misused
mv references in the original patch.
A 'bug-fix' for encoding complexity is done, reducing the additional
encoding time from 50% to 20%. In sub8x8 case, the old patch
did motion search for every interpolation filter (vp9 only
searches once). This fix also slightly improves the coding gain.
This experiment has been made compatible with REF_MV and EXT_REFS.

Coding gain (derflr/hevcmr/hevchd): 0.267%/0.542%/0.257%

Change-Id: I9a94c5f292e7454492a877f65072e8aedba087d4

This commit considers the case where a single reference motion
vector pair is found in the candidate list. It treats this pair
as the effective motion vector for nearestmv mode. This improves
the coding performance by 0.06% for stdhd sets.

Change-Id: I9ce12f456b52912933e05c18c3841a78c26155d2

This commit allows the codec to add motion vector pairs into
the candidate list. It further improves the compression performance
by 0.1% across derf, hevcmr, stdhd, and hevchr sets without adding
encode/decode time.

Change-Id: I88d36da25a2a89bb506d411844af667081eba98b

Also includes a bug fix.

Change-Id: Ia49ed00f8ffd1531c10bcf89b1f497310ee7cb82

The nominal tx_type for a given mode is used as a context
to encode the actual tx_type for intra.

Results:
derflr: -0.241% BDRATE
hevcmr: -0.366% BDRATE

Change-Id: Icfe7b0a58d79bc6497a06e3441779afec6e01e21

It allows the codec to account for certain corner cases when
processing inter prediction mode entropy coding.

Change-Id: Ied451f4fff26ba579f6556554b8381ff2ccd0003

Various additional changes were made to make the experiment
compatible with misc_fixes.

derflr: +0.979%
hevcmr: +0.865%

Speed-wise with --enable-supertx the encoder is only about 10%
slower than without. Decoding impact is about 30% slowdown.

Note this does not work with ext-tx or var-tx yet. That is
a TODO.

Change-Id: If25af4241a7a9efbd28f58eda3c4f044c7a7ef4b

Change-Id: Ic23c10b6d2a9fed3abe69c6bf10e910832444f2c

This commit allows the codec to analyze the reference motion vector
candidate list and adaptively reduce the size of inter prediction
mode set.

Change-Id: Ied6a403843b860d66f26ed485c1825c05c71bdfc

This commit re-works the entropy coding scheme of the motion
compensated prediction modes. It allows more flexible hyperplane
partition for precise classification.

Change-Id: Iba5035c76691946cf1386b6c495e399c3d9c8fc5

It was removed by the master branch merge.

Change-Id: I4b2a524c9e052e41063359afcb4ba22bf78344cf

Store it in nextgenv2 for now.

Change-Id: Iab0af0e15246758e3b6e8bde4a74b13c410576fc

This commit adds top-right corner and collocated block into the
reference motion vector candidate check list.

Change-Id: I892a4c7fb04ddda44e0f9dfe769471252d40c42b

Take out an unnecessary use of the mode context array.

Change-Id: I4032ed18464e5ec49a2160bea964bad9b716ee54

This commit ports the motion vector stack from motion field
analyzer to the encoding and decoding pipeline.

Change-Id: Ie283c1e1a15b4c17a1c7c175ce322bf053bb7840

Under the experiment of EXT_REFS: LAST2_FRAME, LAST3_FRAME, and
LAST4_FRAME.

Coding efficiency: derflr +1.601%; hevchr +1.895%
Speed: Encoder slowed down by ~75%

Change-Id: Ifeee5f049c2c1f7cb29bc897622ef88897082ecf

Coding gain on derflr drops to +1.83%.

Change-Id: If68c429f09422a70513d9f1e8e36e10c928e034a

Remove MISC_FIXES flags except for the changes on MV precision, which
has a 0.1% performance drop.

On derflr, the impact is -0.012%.

Change-Id: I0a74e5a212dd0cb827192a318c92a714c9681e45

Coding gain remains about the same, while overall speed is
substantially increased.

Change-Id: I2989bebcfd21092cd6a02653d4df4a3bf6780874